CODEWITHSUNDEEP
c++csocketsnetwork-programming
Avihai Marchiano
Avihai Marchiano

Reputation: 3927

Is it ok to use in both datagram socket for send and received?

My class MasterSlaveSynchronize is used both to send and recived hearbeat. Is it ok to have only one datagram socket that will use to both - send , recieved ?

The 2 method bellow run from time to time and can run simultaneously.

void MasterSlaveSynchronize::sendHearBeat() {
    const int HEARBEAT_LEN = 1;
    const char HEARBEAT[1] = { '1' };

    int n = sendto(sock, HEARBEAT, HEARBEAT_LEN, 0,(const struct sockaddr *) &target_, length_);
    if (n < 0)
        printf("Sendto"); //TODO ERR
}

void MasterSlaveSynchronize::recivedHearBeat() {
    char buf[1024];
    if (bind(sock, (struct sockaddr *) &this_, length_) < 0)
        printf("binding"); //TODO err
    while (1) {
        int n = recvfrom(sock, buf, 1024, 0, (struct sockaddr *) &target_,&length_);
        if (n < 0)
            printf("recvfrom"); //TODO ER
        //TODO update got hearbeat
    }

Upvotes: 2

Views: 711

Answers (1)

Alnitak
Alnitak

Reputation: 339906

Yes, it's fine (indeed expected) to use the same socket for sendto and recvfrom.

However your recivedHearBeat() function never exits. That's OK, if it's running in a separate thread.

Upvotes: 2

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